Okay kiddo, so when we talk about astrophysical maser, imagine your bathtub. When you turn on the faucet, water flows out and makes a loud noise when it hits the drain, right? That's like a maser, but instead of water, it's light!
In space, there are places called "maser spots" where the light can bounce around and amplify, just like how the sound of water hitting the drain gets louder when it bounces around your bathroom. These maser spots usually form around stars, and they emit very strong radio waves.
Scientists use the astrophysical maser to study the movement and behavior of stars and other celestial bodies. It's like using a magnifying glass to see something up close.
Astrophysical masers also help us understand how the universe works, and how different objects in space affect each other. Pretty cool, huh?